Carbureter.



L. L. CUTLER.

v CARBURETER.

APPLICATION FILED JULY 22,1910.

Patented Apr. 18, 191 1.

,9, BID

N N N In QeritorI.

\Attorneys I FUNITE STATES PATENT OFFICE.

Lomn L. cU'rLEmoF DANVILLE,rnLruorsghssrcnon or ONE-SIXTH TO THOMAS s. CUTLER, ONE-SIXTH TO SAMUELH. CUTLER, AND oNE-sxx'rH TO oam CUTLER,

ALL of DANvILLE, ILLINOIS.

. useful Carbureter, of which the following 1s a specification.

This invention relates to .carbnreters employed in connection with internal combustion engines for forming the combustible charge; and it is the object. of the. invention to provide a. carburetor of this kind which is so constructed as to prevent flooding of the engine cylinder with the gasolene or other hydrocarbon. v

v A further-object of the invention. is to provide a carbureter in which a thorough.

' mixture of air and hydrocarbon vapor, in

proper proportions, is effected, and in which the proportion of air and vapor can be readily varied to suit the conditions under which the engine is running.

With these objects in view, the invention consists in a novel construction and arrangement of parts to be hereinafter described and claimed, reference being bad to the accompanying drawing forming a part of this specification, in which drawing,

Figure 1 is a central vertical section of the carburetor which is the subject of the present invention. Fig. 2 is a horizontal section on the line 22 of Fig. 1.

As shown inv the drawing, the casing 5 of the carburetor is substantially cylindrical in form, with one of its ends madeslightly flared as indicated at 6, this being the inlet end. To the opposite end ofth'e. casing is connected a pipe 7 which leads to the intake manifold of the engine. Into the inlet end of the carbureter casing is screwed, or otherwise secured, a disk 8 carrying a series of screens 9. these screens being in' the form .of concentrically arranged cones extending into the carburetor casing and ha ring parallel spaced walls, their apices. pointing in the direction of the outlet 7. The disk has openings to permit the passage of air there. l'l1l()1l;1li intu the earluuieter casing. and it. is locked in place by means of a. setserew 10. Between lhd'sereens 5) and the outlet 7 the carburetor casing contains a diaphragm '11 having a. central owning 12 in which seats a valve 13. said valve opening upwardly in the direction l' the outlet. and being pro-- m ximum Specification of Letters Patent.- Patented Apr. 18, 1911 Applicationfiled July 22,1910. Serial No. 573,265. T

vided with guide wings 14. From the bottom. of the valve depends a stem 15, which is guided in 'a central opening made in a bridge 16 extending across the interior of the carburetercasing. An air'inlet-to the carbureter casing is located between the valve 13 and the outlet 7, the casing having a side opening IT in which seatsa valve 18 which is normally held closed by means of spring 19. This s'pringis 'coil'ed around a stem :20

carried by'a plug 21 which screws into an openmg'in the carbureter casing, said opening being located diametrically opposite the 7' opening 17. In the back of the valve 18 is anopening 22 to receive the end of the stem 20. the deptlrof said opening being such that the valve is permitted to open. The spring 19 is interposed between the back of the valve and the pliig21, and therefore serves to normally hold the valve seated, the valve opening against the tension of the spring.

This tension may be adjusted by means of the plug 21 upon screwing the same farther into or out of the opening in the carbureter casing.

The opening 17, on the putside. of the carhnreter casing, is surrounded byatubular extension 23 of said casing, across the interior of which abridge 24 extends. said bridge having a central opening through which passes a stem-25 extending from the valve 18, whereby the latter is guided in its movement toward and from its seat. The

outer end of-the stem 25 projects a sutlicient cated at 27, a) a bracket- 28 carried by the carbureter casing. This lever is provided for the: purpose of openingthe valve 18 manually whenever necessary.

The inlet of the gasolene or other hydroearbon is located between the valve 13 and the screens 9. The 'carbureter casing is formed at this point, on the outside. with a boss 29 having a passage 30 which opens through the casing wall into a pipe 31 located in the casing. The pipe has two substantially semi-cireular branches 32 encircling the stem .15, and disposed horizontally. Inthe bottom of the branch pipes 32 is a ring of outlet :qierturesthrough.-

whielrthe gasolene is discharged onto the-x screens 9, said'branch pipebeing locai't above "the and arranged concentric thereto- The pi 31is secured in any su table manner tot ecarbureter casing, on the inside thereof. In the boss-is a side passage 33 which opens into the. 'passagefiO, and is connected to a suitable source of supply by =a pi e or other-means 34. The passa 'e of gaso ene into the'pi needle valve 35 earned by a valve bonnet 36 I which screws into the boss 29, andis pro-' vided with a. suitable stuifin'gboxfi'i', and a gland 38. The,- stem of the needle valve is flows mto the. branches 32 thereofiflfrom.

' which it is discharged onto the top screen 9. The asolene "runs down the screen' and spree s overthe some, and any surplus passes through the sinneto the next'screen which isspaced a little-distance below, and

' same through the openings in the disk'8, and

passing through the screens. The valve 13 on to the lowest screen. When the engine makes a suction stroke, a r is drawn throu h the carburetor casing, be our entering t 9 also opens on the suction stroke of the enine." The fine particles of. gasolene adhering'to the screens are taken up by the air passing therethrough, and the this thorou hly vaporized. he vapor passes throng theopening 12 to the outlet l screens to the atmosphere, an

7, and is carried into the engine cylinder. Surplus gasolene, if any, esca es from the flooding of the cylinder is thus efiectually prevented.

30 is controlled y a.

asolene is por. When the "e ngine .-,is mun normal, the jvalve remains closed.- ;When'the speed ofithe engiheinereases sufiiciently to pro duce asuctiodstrong enough to open the valve 18, additional supply of air enters the carbureter casing, and mixeswith thevapor, thus varying the proportion of the air and the combustible'vapor, the volume of the explosive mixture however remaining constant. Thespr1ng-19 will be adwsted soas to permit opening of the valve 18 when a certain speed is exceeded, and the valve may also be opened manually by ineuns of the lever 26.

- lVhatis claimed is: v

A carburcter comprising a. casing. having an air inlet at its lower-end, and a vapor outlet at its upperend, a disk removably mountedin the air inlet and having openings through it, a series of: concentric conical screens having their bases supported upon the disk over its openings and having their walls parallel with and spucedfroin each other, and a liquid fuel supply pipe leading through the side of the casing and having, substantially semi-circular branches pierced with a ring of apertures standing above the wall ofthe uppermost screen.

as my own, I have hereto afiixed my signature in the presence of two witnesses. 4 I LORIN L. CUTLER \Vitnessesz. l.

L. D. GASS, J. L. Tmonnn.

Copies 01 this patent mav be obtained for live cents each, by addressing the Commissioner 0! Iatents. Washington, D. G.

s (15 its 11st: (mating-me Q vary the pr poroon of 'a-ir and gasolene va- In testiinony that I cla m the foregoing I 

